Rotary valve mechanism for gas-engines.



E. P. ETZEL. ROTARY VALVE MEUHANSM PGR GAS ENGINES. APPLIcAToN FILED MANU, 1910.

LOLGS. Patented sept, 2, 1913 EUGENE P. BATZEL. OF

DETROIT, MICHIGAN, ASSIGNOIB, 0F ONE-HALF T0 GEORGE C.

BECK, OF SPQKANE, WASHINGTON.

ROTARY VALVE MECHANISM FOR GAS-ENGINES.

Specitcation of Letters Patent.

Patented Sept. 2, 1913.

Application led May 10, i910. Serial No. 560,528.

To all whom it may concern Be it known that I, EUGENE P. BATzEL, a subject of the Czar of Russia., and resident of the city of Detroit, county of llayne, and State of Michigam'have invented certain new and useful Improveinclnts in Rotary Valve Mechanism for G :1s-Engines, of which` the following is agspeciiication.

The main object of this invention is to provide an explosion engine of the compression type with a rotary valve, .said valve'.

Abeingso timed as to open the inlet and exhaust ports of' the engine at the proper points in the piston travel.

Another object of the invention is to pro .tide a single disk valve and to rotate said valve in such mann-er that it will open the inlet and exhaust ports-at the proper point in the piston travel, and to provide simple and e'ective means for cooling and lubricating said' valve.

QOther objects of Anotherimportant object of the invention is to so locate and protect the rotary valve that it will not be subject to the gas pressures in the engine cylinder except where 'said'valve extends across and closes the inlet' and exhaust ports. the invention will appear hereinafter.

'Referring' to the drawings: Figure 1 is a vertical central sectional View of the engine cylinder and the valve mechanisimFi 2 is a horizontal sectional view on thelineI -II of Fig. l; Fig. 3 a detail plan view showingthe valve operatinggears, the inclosing A cap'being removed; Fig. 4 a-detail. plan vview of the rotary valve; and Fig. 5 is a side'elevation of the engine showingv the ."gearsfo driving the valves from the engine Sliaft Y i.' fReieri-ing to thevarious parts by nuincrals, l designates 'the engine "cylinder, 2 the Ipiston therein, 3 the connecting rod. The

' end of the cylinder is provided with aii inlet port 4 and an exhaust, port 5, and with a fiat` external' circular valve seat G which isl slightly larger 'in diameter f than` the engi 9ylinder. The water or coolingspace formed around the cylinder in the usudl wayand extends inunder 'the valve seat as' at'8 in' Fig. 1,',so that Asaid valve seat is cooled on its' under 'side' throughout `practi- ,"cally its entirearea.' Fittedtorotatc on this valve Seat is a flat disk valv'e'9 formed with a siiigie'iportlll() so placed that ,in th'e rotation A ney as the cylinder ports. Secured to'the end of vthe cylinder and inclosing 'the valve is a cylinder head ll, said head being formed with an inlet port 12 registering with the cvlinder inlet port. and with an exhaust port 13 registering with the cylinder exhaust. This head is formed with a water space 14 which surrounds theinlet and exhaust ports and extends'over the greater'- portion of the rotary yalve. It will thus be seen that the valve is cooled on its upper and lower sui'- faces throughout the greater portion of its area.

The cylinder head is formed witha 'cen-. tral hub 15 through which the valve Stern 1G extends, said stein carrying the valve. This hub is provided with a bushing 17 in which vthe stein rotates. and is also formed with a. vertical lubricating passage 18 arranged to deliver lubricant to the rotary valve. The valve stein within the bushing, and extending from the upper to the lower end of said bushing, is provided with a spiral lubricating groove 19. On the valve stein above the hub and above the cylinder head is secured a valve driving gear 20, said gear being inclosed by a gear case or cover 21. The cylinder head and the gear case are secured 4to the engine cylinder by means of bolts 22. The upper endv of thegear case is fitted with a bushing 23 to receive the upper eiid of the valve stem. The upper end ofthe hub is formed with a horizontal groove 24 which extends iuwardlyfrom the upper end of the lubricating channel or duct 18; and the valve driving gear isvformed with an inwardly extending slot 9.5 at a point directly over the valve port, said Slot being adapted to register with the groove 24, as the gear rotates, to permit lubricant to pass .from the 'upper end of the cylinder headthrough said groove. The' solid portionof the gear covers -tbe upper end vofthe lubricating groove and channel, and cuts'otrI communication between said groove and channel., and the interior of the valve CaSe eXCept when theslot'25 is inv register therewith.4 Y

W'hen theengine eylinde'rsare arranged nected to a singleexhaust in the head. This permits of a very simple and compact arrangement of the parts. As shown in Fig. 2, the hubs of the cylinder head are cach provided with t\\'o lubricating channels 18. one beingr arranged between tli'e`irilct and exhaust port on the said head, and the other being arranged jnstfbeyond the inlet port in the direction of rotation of -the valve.- As shown in Fig. 3 the valve driving gears intermesli, and one of said gears is drivcir .by a pinion 26 mounted on the vertical shaft 27, said shaft carrying a worm gear 28 near its lower "end, whichmeshcs with a worm 29 on shaft 30.v This shaft 30 carries a gear 3l which meshes with a geaiiA 32;A on the engine crank shaft 33., In a Afour-cycle engine the valve driving ears will be so proportioned that the spec ofthe valve will be one-half the speed of the enginecrank shaft.

In the construction shown in Figs. 1 andlubricating oil will be delivered into the gear compartment, and from said compartment willflow throughthe slot or groove 25 into the groove 24. and channel '18 to the upper surface of the valve. The slot 25 will. be so propoitioned that it`will permit just the right amount of lubricant to flow from the gear case to the rotary valve. The lubricant will ao enter the spiral lubricating groove in the valve stem as the said stem rotates and the piral groove registers with the inner end of the groove 24. The valve inlet port during the rotation of the valve will register with the lower end of the chani 'nel 18, thereby permittin 'lubricant to drop to the valve seat 6 and tie continued rotation of the valve will distribute said lubricant over said seat so that the valve will be lower sur aces.

thoroughl lubricated both on its upper and From the foregoing itis manifest that I provide a valve gear of very simple construction which will be largely protected in g y large, thereby insuring a full charge of explosivemixture and a complete exhaust of theA cylinder.

.The ports in the valve and in the engine cylinder are preferably sector-shape, whereby said valves may be increased with theA increase in the diameter of the valve'and of the e ine. It is also apparent that should .thc va ve be broken from the valve stem it can not drop into the engine cylinder.-

It will, of course, be understood that the vvalve gears may be driven invany suitable -type comprisingv a cylinder, a valve scat formed with aiiinlet and an exhaust iort, a rotary valve fitting to Said seat and ormed with a port, and means for' automatically lubricating both faces of said valve bythe rotation thereof.

2. An explosion engine of the compression type comprising a cylinder, a piston, a ro tary valve, said valve being surrounded by cooling spaces, inlet and exhaust ports cxtending through said cooling spaces, means for driving said valve, and means for alitomatically feeding a lubricant to both faces of the valve as the latter rotates.

3. An explosion engine of-the compression type comprising a cylinder, a piston, a rotaryvalve, said cylinder. having a channel for a lubricant leading to the valve, cooling means surrounding said valve on the opposite faces thereof, inlet and exhaust ports extending through said cooling means, a gear for driving the'valve, and means whereby the gear may feed a lubricant to the channel and to said valve.

4. An eitplosive engine of the compression type comprising a cylinder, a piston, a rotary valve, 'said cylinder having a channel for a lubricant leading to the valve,- cooling means surrounding said valve, inlet and exhaust ports extending through said cooling means, a gearQfor driving the valve, and means whereby "the gear may feed a lubricant to the channel and to both faces of said valve.

5. An explosion engine of the compressiontype comprising a cylinder, a piston, a rotary valve having a stem parallel to the cylinder axis and provided with a. lubricating channel, means for holding a lubricant, said cylinder being provided with a bearing for the stein and a channel for a lubricant in said bearing leading to the valve, means for drivin said valve, and means for feed: ing a lubricant to the channels through the va ve rotating means.

6. An explosion engine of the compression type, comprising a c linder, a valve seat provided with suitably arranged porta, avalve operating against'said seat, and means. for admitting a lubricant toboth faccsfo'f the valve governed by the motion of the valve. l

7. An explosion engine of the compression type, comprising-a' cylinder, a piston there in, a valve ,seat provided with suitably :r ranged inlet and exhaust ports, a rotary valve fitting said seat, means for driving said valve, and means for timing the admis- I sion of lubricant to both faces of said valve as the latter rotates.

8. An explosion engine of the .compression type, comprising a cylinder, a piston therein,'a rotary valve having its seatsurrounded by' cooling spaces, with inlet and exhaust ports extending through said cooling spaces, driving means for said valve, a lubricant Container, a channel for a lubricant leading to the valve, and means whereby the motion of the valve admits the lubricant from said channel to the upper and lower surfaces to be lubricated.

9. In an explosion engine, thc combination of a plurality of cylinders, having pistons, inlet and exhaust ports, a plurality ot' rotary valves surrounded by cooling spaces, said inlet and exhaust ports extending through said cooling spaces and controlled by said valves, means located intermediate the cylinders orsilnultancously rotating the valves, a lubricant container, lubricating channels leading to said valves, and means wvhereby the motion o' each valve controls e 10. An explosion engine of the compression Vtype comprising a cylinder, an exterior valve seat at the end thereof formed with an inlet and an exhaust port, a rotary valve fitting said seat and formed with a port, a cylinder head inclosing said valve and formed with alubricating channel adapted to register with the ort 1n the valve as the valve rotates, where y the lubricant will be delivered to the valve seat below the valve,

a valve stem connected t0 the valve, and' means connected to said stem for rotating,r the valve.

11. An explosion engine of the compression type comprising a cylinder, an exterior valve seat at one end thereof, and formed with an inlet and an exhaust ort, a rotary valve fitting said seat and ormcd with a port, a cylinder head inclosing said valve and formed with a lubricating channel adapted to register with the port in the valve as said valve rotates, a valve stein connected to the valve, a valve driving gear mounted on said stem and formed with la slot adapted to register with the lubricating channel in the head, and means for rotating said ear.

f Thls specification signed and witnessed this 28" day of April A. D. 1910. Y

EUGENE P. BATZEL. Witnesses P. G. VEAMER, P. ARMANER. 

